Click on the Start button below to begin the “Chemistry Sample Practice and Mock Test for JEE Main and Advanced 2013″.

Note: No calculator is allowed during the quiz, and you may use a pencil and a piece of scratch paper. Try your best to answer all 10 questions in minimum time. The correct answers will be shown at the end of the quiz.

All questions are of objective type (multiple choice questions); each question with choice of four answers.

JEE Main_CHEMISTRY_9

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Question 1

Beryllium and aluminium exhibit many properties which are similar. But the two elements
differ in

A

exhibiting maximum covalency in compound

B

exhibiting amphoteric nature in their oxides

C

forming covalent halides

D

forming polymeric hydrides

Question 2

The soldiers of Napolean army while at Alps during freezing winter suffered a serious
problem as regards to the tin buttons of their uniforms. White metallic tin buttons got
converted to grey powder. This transformation is related to

A

an interaction with nitrogen of the air at very low temperatures

B

an interaction with water vapour contained in the humid air

C

a change in the partial pressure of oxygen in the air

D

a change in the crystalline structure of tin

Question 3

A

Cr

B

Co

C

Fe

D

Mn

Question 4

Among the properties (a) reducing (b) oxidising (c) complexing, the set of properties shown
by CN- ion towards metal species is

A

a, b

B

a, b, c

C

c, a

D

b, c

Question 5

The coordination number of central metal atom in a complex is determined by

A

the number of ligands around a metal ion bonded by sigma bonds

B

the number of only anionic ligands bonded to the metal ion

C

the number of ligands around a metal ion bonded by sigma and pi- bonds both

D

the number of ligands around a metal ion bonded by pi-bonds

Question 6

A

1

B

2

C

3

D

4

Question 7

Coordination compound have great importance in biological systems. In this context which of
the following statements is incorrect?

A

Chlorophylls are green pigments in plants and contains calcium

B

Carboxypeptidase – A is an enzyme and contains zinc

C

Cyanocobalamin is B12 and contains cobalt

D

Haemoglobin is the red pigment of blood and contains iron

Question 8

Cerium (Z = 58) is an important member of the lanthanoids. Which of the following
statements about cerium is incorrect?

A

The common oxidation states of cerium are +3 and +4

B

Cerium (IV) acts as an oxidizing agent

C

The +4 oxidation state of cerium is not known in solutions

D

The +3 oxidation state of cerium is more stable than the +4 oxidation state

Question 9

A

1

B

2

C

3

D

4

Question 10

A

142

B

146

C

140

D

144

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